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Have you been to a movie lately? After you buy your large tub of buttered popcorn, your tray of pretzels, cheese dip and Diet Coke (you wouldn’t want regular Coke with all its calories), the ponytailed 16-year-old behind the counter asks if you want a receipt. After you fill your tank, the pump asks: “Receipt? Yes or No.” Ditto for your ATM.

Someone, somewhere has wondered, “How much do we spend on these rolls of receipt tape?”